146 DDT— Killer of Killers 



sea life — if that were desirable. And, as in the case of 

 the medicinals, those who had the most to do with the de- 

 velopment of DDT insecticides were not the ones who made 

 the fantastic claims. 



Let us evaluate DDT on the basis of what it has done 

 and what it can do — not on what somebody hoped it would 

 do. When we take this rational point of view we are led, 

 inevitably, to the conclusion that the development of DDT 

 was the greatest contribution to the field of insecticides since 

 that day in 1869 when man first began to use poisons in his 

 fight against his eternal enemies — the enemies that fly, that 

 crawl, and that hop; and yet are so small that it is hard for us 

 to believe that some day they may, if we weaken our guard, 

 inherit the earth. 



